Remove use of quickbook 1.4 features from unordered container documentation,

so it'll build with quickbook 1.3 (will put them back soon-ish).


[SVN r3995]

doc/hash_equality.qbk

@@ -34,9 +34,37 @@ Alternatively, you might wish to use a different equality function. If so, make
 sure you use a hash function that matches it. For example, a
 case-insensitive dictionary:
 
-[import src_code/insensitive.cpp]
-[case_insensitive_functions]
-[case_insensitive_dictionary]
+    struct iequal_to
+        : std::binary_function<std::string, std::string, bool>
+    {
+        bool operator()(std::string const& x,
+            std::string const& y) const
+        {
+            return boost::algorithm::iequals(x, y);
+        }
+    };
+
+    struct ihash
+        : std::unary_function<std::string, bool>
+    {
+        bool operator()(std::string const& x) const
+        {
+            std::size_t seed = 0;
+
+            for(std::string::const_iterator it = x.begin();
+                it != x.end(); ++it)
+            {
+                boost::hash_combine(seed, std::toupper(*it));
+            }
+
+            return seed;
+        }
+    };
+
+    struct word_info;
+
+    boost::unordered_map<std::string, word_info, ihash, iequal_to>
+        idictionary;
 
 A more generic version of this example is available at:
 [@../../libs/unordered/examples/case_insensitive.hpp /libs/unordered/examples/case_insensitive.hpp]